Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 34 for “"FE Simulations"”.
-
Simulation of Ductile Fracture in Pipeline Steels Under Varying Constraint Conditions
… has two major objectives: (1) to study the effect of non-singular T-stress (or constraint) variations on crack tip opening angle (CTOA) of pipeline steels using modified boundary layer (MBL), and (2) to simulate ductile crack propagation in pipeline steels using drop weight tear test (DWTT) …
-
Transcatheter Mitral Valve Replacement: Structural and Hemodynamic Analysis
… PERIMOUNT Magna mitral valve and finite element (FE) simulations were conducted to obtain the stress distribution on both valves. Moreover, to visualize the flow field within the left heart, steady-state computational fluid dynamics (CFD) simulations were run. The FE simulations demonstrated that …
-
Finite element and experimental evaluation of injection forging for the forming of automotive fasteners
… of injection forging by finite element (FE) analysis and physical experiment. For the comparison of the conventional forming process with injection forging, ABAQUS and DEFORM were used to conduct FE simulations of the forming of a wheel bolt. Axisymmetric models were developed with both …
-
Advancing Maternal Health through Projection-based and Machine Learning Strategies for Reduced Order Modeling
High-fidelity computer simulations of childbirth are time consuming, making them impractical for guiding decision-making during obstetric emergencies. The complex geometry, micro-structure, and large finite deformations undergone by the vagina during childbirth result in material and geometric …
-
A Comparative Analysis of Experimental and Computational Methods for Evaluating Partial Discharge Inception Voltage on Printed Circuit Boards
… both experimental procedures and finite-element (FE) simulations. Experimental measurements were conducted using a standard-based 60 Hz AC voltage stimulus to determine the partial discharge inception voltage (PDIV) for each design. Simulations of the geometry for each PCB test subject were also …
-
Development of rate-dependent thermoplastic constitutive models for numerical analysis of ceramics at high-temperature
… material subroutines to be used in commercial FE softwares and their accuracy is evaluated in model problems allowing for semi-analytical solutions. Material constitutive parameters are obtained from a combination of experimental tests and multi-objective optimization and employed in FE …
-
Mechanical Effects of Surgical Adhesives on Ascending Thoracic Aortic Aneurysm Replacement
… This study aims to investigate mechanical effects of four commonly used surgical adhesives, namely BioGlue, CoSeal, Crosseal, and Tisseel, on the suture site using in-vitro digital image correlation (DIC) method and finite element (FE) simulations in an ovine model. In this study, first, …
-
Finite Element Modelling and Experimental Characterisation of Auricle Mechanics for Earable Design
… with the potential to transform daily life. Among these, auricle-mounted “earables” are emerging as a promising platform for neural interfaces, leveraging the ear’s anatomical accessibility, social acceptability, and structural stability. The auricle provides a natural site for …
-
Investigation of die wear by modelling the extrusion of Inconel 718
… such as in forging and extrusion. Die life affects the economics of process to product and in order to optimise die life, the mechanism of wear should be approached scientifically. The aim of this work is to provide a systematic method for predicting and quantifying wear occurring in the …
-
Numerical analysis of a shear ram and experimental determination of fracture parameters
… with the high drilling fluid density affect the BOP's ability to shear. This study investigates all stages of the shearing process and attempts to optimize the geometry of the shear blades. In order to do that, simulations are conducted with Finite Element Models (FEM) by utilizing the …
-
Micromechanical Behavior of Fiber-Reinforced Composites using Finite Element Simulation and Deep Learning
… composites through high-fidelity numerical simulations. We investigated multiple transverse cracking of cross-ply CFRP laminates on the microstructure level through simulating large numerical models. Such an investigation demands an efficient numerical framework along with significant …
-
Investigation of Quad Bike Rollovers in the Workplace Farm Environment
… resulting in a lateral rollover. Finite Element (FE) simulations identified that quad bikes are vulnerable to rolling over as a result of traversing relatively small asymmetric bumps on moderate slopes at speeds typical of the farming environment. These results suggest that users and owners of …
-
Fundamentals and Applications of Hot Stamping Technology for Producing Crash-Relevant Automotive Parts
… process, simulation of forming, heat transfer and phase transformations have to be solved concurrently. The major objective of this study is to address these issues and to use Finite Element (FE) simulations to predict: 1) presence of defects, 2) thickness and hardness distribution, 3) …
-
Origami-inspired mechanical metamaterials
… are reproduced accurately by finite element (FE) simulations. Both numerical and experimental results show that introducing structural heterogeneity by combining different origami cell types can lead to enhanced material performance while remaining lightweight. Second, a geometric parameter …
-
Numerical-Informational methodology for characterising steel bolted components coupling finite element simulations and soft computing techniques
Over the last few decades, the characterisation of steel joints has been a highly active research topic thanks to its inherent complexity and utmost importance in the behaviour of a whole structure. The emergence of the semi-rigid concept provided significant benefits from both the structural and …
-
Hot embossing of polymeric tubular micro-components
… of 1.6mm or below, and have reduced inner feature in the micron meter ranges. The proposed process feasibility study was supported by: 1) FE simulations using data obtained from material characterisation tests and 2) forming experiments and quality assessment of the formed components. …
-
Analytical investigation of fretting wear with special emphasis on stress based models
<p>Fretting refers to the minute oscillatory motion between two surfaces in contact under an applied normal load. It can cause either surface or subsurface initiated failure resulting in either fatigue or wear or both. Two distinct regimes – partial slip and gross slip are typically observed in …
-
Uncertainty quantification for pavement life-cycle stages
Life-cycle assessment (LCA), a common sustainability metric, is usually adopted to quantify the environmental consequences of a product. It has been shown that rolling resistance (RR), a major component of pavement LCA use stage, has significant impact on transportation-related energy consumption. …
-
Integrating Smart Materials and Adhesion Mechanics for Soft Gripping Mechanisms
… of substrates and thus have applications in transfer printing, handling in automated manufacturing processes, and climbing robots. Polydimethylsiloxane (PDMS) and Ecoflex-50 are among the most commonly used elastomers in soft robotics due to their manufacturability and desirable mechanical …
-
Experimental and Finite Element Evaluation of Mild Traumatic Brain Injury
… diagnosis, and treatment strategies for affected individuals.This dissertation explores the biomechanical and biological impacts of mTBI induced by blast exposure and rapid acceleration, focusing on both experimental replication and finite element (FE) modeling. In experimental studies, …
Page 1 of 2